1311436147 has 8 divisors (see below), whose sum is σ = 1529372000. Its totient is φ = 1124087832.

The previous prime is 1311436141. The next prime is 1311436157. The reversal of 1311436147 is 7416341131.

It is a happy number.

It is not a de Polignac number, because 1311436147 - 2⁷ = 1311436019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311436141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1911372 + ... + 1912057.

It is an arithmetic number, because the mean of its divisors is an integer number (191171500).

Almost surely, 2^1311436147 is an apocalyptic number.

1311436147 is a deficient number, since it is larger than the sum of its proper divisors (217935853).

1311436147 is an frugal number, since it uses more digits than its factorization.

1311436147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823450 (or 3823436 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 1311436147 is about 36213.7563227015. The cubic root of 1311436147 is about 1094.5838850368.

Adding to 1311436147 its reverse (7416341131), we get a palindrome (8727777278).

The spelling of 1311436147 in words is "one billion, three hundred eleven million, four hundred thirty-six thousand, one hundred forty-seven".